PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “Denture, Partial”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 415 records · Page 23Linked to original sources
PubMed1989

[Occlusal models in removable partial denture].

In removable partial prosthesis, occlusion patterns play an important part in controlling the factors of inaccuracy at the recording stage. Only rigid patterns allow the necessary precision and reproducibility of the sequences. After recalling the role of these patterns, this document describes first their features related to the base and rims; then, it examines in detail and with figures the different steps of development in laboratory.

Dental Occlusion↗
PubMed2002

Complications and failures in removable partial dentures: a clinical evaluation.

The design of removable partial dentures (RPDs) is an important factor for good prognostication. The purpose of this study was to clarify the effectiveness of denture designs and to clarify the component that had high rates of failure and complications. A total of 91 RPDs, worn by 65 patients for 2-10 years, were assessed. Removable partial dentures were classified into four groups: telescopic dentures (TDs), ordinary clasp dentures (ODs), modified clasp dentures (MDs) and combination dentures (CDs). The failure rates of abutment teeth were the highest and those of retainers were the second highest. The failure rates of connectors were generally low, but they increased suddenly after 6 years. Complication and failure rates of denture bases and artificial teeth were generally low. Complication and failure rates of TDs were high at abutment teeth and low level at retainers. Complication and failure rates of ODs were high at retainers.

Adult↗
PubMed1982

Satisfying esthetic demands with rotational path partial dentures.

A description of the rotational path design concept for removable partial dentures has been presented. Through the combined efforts of the clinician and laboratory technician, a rotational path partial denture can be developed that meets the basic mechanical requirements and eliminates certain clasp arms. The primary advantages of this design include less display of metal, enhancing the patient's appearance, and decreased tooth and tissue coverage by partial denture framework components.

Dental Abutments↗
PubMed1999

Stiffness of different designs and cross-sections of maxillary and mandibular major connectors of removable partial dentures.

STATEMENT OF PROBLEM: Major connectors of removable partial dentures must distribute forces bilaterally without damaging the supporting tissues. PURPOSE: This study investigated which design and cross-sectional shape of major connectors most favorably influence rigidity and flexibility. METHODS AND MATERIAL: Five designs for maxillary removable partial denture major connectors and 5 lingual bar major connectors of different cross-sectional forms were cast in chrome cobalt alloy on a master cast. Points M and P, which represented the position of the first premolar and second molar teeth, were positioned 20 mm apart on the casting. Vertical and horizontal forces were applied to each point while the opposite side was gripped in an Instron testing machine. A force-deflection curve was obtained for each loading point. Mean stiffness values were obtained for loading in compression and torsion. RESULTS: Values for torsional loading simulating vertical forces were lower when compared with values obtained for compression loading that simulated horizontal occlusal forces. Differences in stiffness were greater in mandibular major connectors loaded at M and P. The half pear-shaped cross section was the stiffest. CONCLUSIONS: In the maxillary arch, the most rigid major connector was the anteroposterior palatal bar combination placed on different horizontal and vertical planes. The most flexible was the U-shaped design. In the mandibular arch, the most important factor in achieving rigidity was the cross-sectional shape of the major connector. The half pear-shaped cross section proved to be the most rigid.

Bicuspid↗
PubMed1976

Accuracy of six elastic impression materials used for complete-arch fixed partial dentures.

1. The accuracy of four types of impression materials used to make a complete-arch fixed partial denture was evaluated by visual comparison and indirect measurement methods. 2. None of the tested materials allows safe finishing of a complete-arch fixed partial denture on a cast poured from one single master impression. 3. All of the tested materials can be used for impressions for a complete-arch fixed partial denture provided it is not finished on one single cast. Errors can be avoided by making a new impression with the fitted castings in place. Assembly and soldering should be done on the second cast. 4. In making the master fixed partial denture for this study, inaccurate soldering was a problem that was overcome with the use of epoxy glue. Hence, soldering seems to be a major source of inaccuracy for every fixed partial denture.

Dental Impression Materials↗
PubMed1995

An 11-year reevaluation of resin-bonded fixed partial dentures.

Clinical success of resin-bonded fixed partial dentures is primarily dependent on their long-term retention. Retention rates of resin-bonded prostheses placed in 66 patients treated by three dentists in private practice were evaluated in the present study. Seventy-seven resin-bonded fixed partial dentures were followed over a period of 1 year to 11 years. Thirty (39%) became dislodged, but nine were successfully rebonded; thus there were 21 failures (27%). Prosthesis location and operator expertise minimally influenced the longevity of these restorations, but the luting agents tested in this sample had a profound impact on retention. Debonding rates were excessive for some materials tested, whereas other agents proved to be predictable. Modifications in preparation design that enhanced resistance form were also likely contributors to improved retention rates.

Dental Bonding↗
PubMed1982

Five-year survey of treatment with removable partial dentures. Part I.

A survey involving 137 patients treated with 203 removable partial dentures was conducted in England, the Netherlands, and the United States from samples of 1-year and 5-year posttreatment data. The objectives were to (1) develop a practical clinical and radiologic method to evaluate the results of removable partial denture treatment and (2) establish baseline values and results of removable partial denture treatment for use by all investigators. The results indicated the following: 1. Gingival pocket depth around abutment teeth was reduced at posttreatment examination. 2. There was an increase in posttreatment abutment teeth mobility that was greater in mandibular than maxillary teeth. Mobility increase was less for abutment teeth than for control teeth. 3. There was a slight loss of bone around abutment teeth that was about equal to loss around control teeth. 4. Oral care (plaque index) showed that 62.4% of all tooth surfaces had plaque accumulation at posttreatment examination. 5. Eleven of 616 abutment teeth (1.78%) were extracted.

Dental Caries↗
PubMed1985

Aluminum-based temporary removable partial dentures.

The fabrication of an aluminum-based temporary removable partial denture has been presented. The advantages of this type of prosthesis include compatibility with oral tissues, accuracy of fit, decreased bulk, and improved thermal conductivity.

Aluminum↗
PubMed2005

Retrospective survival analysis of 3-unit fixed-fixed and 2-unit cantilevered fixed partial dentures.

To evaluate the cumulative survival (CS) rates of fixed partial dentures (FPDs) retained by full-veneer retainers, and those of resin-bonded FPDs provided by graduating dental students for the replacement of a single missing tooth. In 168 patients, 61 3-unit fixed-fixed FPDs and 25 2-unit cantilevered FPDs retained by full-veneer retainers, and 77 3-unit fixed-fixed resin-bonded FPDs and 47 2-unit cantilevered resin-bonded FPDs, were examined for their retention and integrity. The periodontal health, endodontic status and coronal tissues of all abutment teeth were also evaluated. The survival rates of these various designs were analysed with the Kaplan-Meier method. The mean age of all FPDs was 31 months. At 48 months after their insertion, 3-unit FPDs retained by full-veneer retainers had a CS rate of 82%, followed by 2-unit resin-bonded FPDs at 81%, 2-unit FPDs retained by full-veneer retainers at 77%, and 3-unit resin-bonded FPDs at 63%. No significant difference was found between the four designs (P>0.05). Up to both 48 and 60 months, the most common causes of failure were endodontic for FPDs retained by full-veneer retainers, and dislodgement for resin-bonded FPDs. The 3-unit fixed-fixed FPDs retained by full-veneer retainers had the most favourable prognosis after 48 months for replacing a single missing tooth, but the difference between designs was not statistically significant.

Bicuspid↗
PubMed1994

An implant fixed bridge as replacement for a removable partial denture.

This case report documents the replacement of a mandibular partial denture with an implant bridge. With this alternative, the specialist and general dentist can combine their expertise in surgical, restorative and maintenance therapies to develop and maintain a high level of patient comfort and confidence.

Dental Implants↗
PubMed1978

Claspless chrome-cobalt transitional removable partial dentures.

Many of the acrylic resin and bent-wire temporary partial dentures in use today produce pathologic changes in the oral mucosa. A method is outlined for the use of chrome-cobalt, instead of acrylic resin, to produce temporary prostheses. The resulting temporary partial dentures are esthetically pleasing and biologically acceptable to the oral tissues.

Chromium Alloys↗
PubMed1992

Incidence of various classes of removable partial dentures.

The purpose of a classification for removable partial dentures (RPDs) is to simplify identification and enhance its teaching. A classification also allows a longitudinal comparison of various classes of RPDs to determine whether the teaching of RPD design is consistent with the relative frequencies of RPD use. This study surveyed the types of removable partial dentures being fabricated in a regional dental laboratory and compared these findings with data from previous studies. Results indicate that mandibular RPDs are more common than maxillary RPDs and the class I mandibular RPD is the most common type of RPD for either dental arch. A palatal strap was the most frequently used maxillary major connector and a lingual bar was used three times more often than a lingual plate in the mandibular arch. Cast circumferential clasps were used twice as often as RPI clasp designs. The percentage of Kennedy class I RPDs was 40%, class II 33%, class III 18%, and class IV 9%. Comparisons with a previous study indicate the percentage of Kennedy class II has increased, whereas class I, class III and class IV RPDs have not changed significantly. Findings of the study indicate that the frequency of use of the various types of RPDs have changed in the past 30 years.

Chromium Alloys↗
PubMed1985

Duplicate casts in fabrication of temporary removable partial dentures.

The use of blocked-out duplicate casts in the fabrication of temporary removable partial dentures has been described. Temporary removable partial dentures produced in this controlled manner fit properly and aid in minimizing intraoral damage. Accuracy of fit is assured because all relief is accomplished by block out on the surveyor during the laboratory phase rather than by random grinding of the prosthesis at insertion. In addition, the original cast is salvaged and can be used as a meaningful reference during the finishing process in the laboratory (Fig. 5).

Dental Casting Technique↗
PubMed1990

Clinical application of electric resistance welding and soldering methods to removable partial dentures.

The joining procedure for uniting metal structures is very important in the construction of removable partial dentures. However, it has several restricted problems in joining wrought wire clasps to rests or major connectors. For example, the base metal wires made of chromium-cobalt alloy are subject to changes in their mechanical properties caused by heating, and damage to acrylic resin materials (denture base and artificial teeth) occurs in the repair of removable partial dentures by using the torch soldering method. In this paper, in order to resolve these problems, an electric resistance welding machine was applied to attach wrought wire components to a removable partial denture framework. This welding machine was used to attach metal structures temporarily to each other, and to solder the welded joint with hard solder. Consequently, some problems of the conventional torch soldering method were improved by using the electric resistance welding and soldering methods. It was suggested that the clinical application of the electric welding and soldering methods was very useful in the construction of removable partial dentures.

Aged↗
PubMed1979

[Removable partial denture. Excerpts from the literature 1977--1979].

In partial denture prosthesis research and advances were made principally on: -- the fundamental biomechanical properties of the demodont and the fibromucosa. In the light of these findings, the justification of stressbreaking as a principle is questioned -- the mechanical properties of chromium-cobalt alloys -- checking of castings by radiography -- simplification of the designs for removable partial denture frameworks -- impression materials and techniques (fluid-wax functional impression and altered cast-procedure) -- the combination of restauration and plaque control for successful dentistry.

Biomechanical Phenomena↗
PubMed1992

An alternative orientation of nonrigid connectors in fixed partial dentures.

Nonrigid connectors have been advocated for fixed partial dentures. However, space limitations may require overreduction of the preparation or overcontouring of the retainer to place the keyway within the retainer wall. An inverted orientation of the nonrigid connector can resolve these problems. With this design, the key is attached to the distal surface of the mesial retainer in a dual-abutment fixed partial denture, and the keyway is incorporated in the mesial surface of the pontic. This inverted orientation offers several advantages with few disadvantages.

Dental Abutments↗
PubMed2006

[The effects of removable partial dentures on abutment teeth in elder patients].

PURPOSE: To analyse the effects of removable partial dentures on abutment teeth in elder patient and to discuss the reason of the effects and the preventive measures. METHODS: 95 aged patients with removable partial dentures were involved in the investigation, the rate of dental caries, fractures and missing in their abutment and non abutment teeth and the reason were recorded and analysed. X2 test was used for the statistical comparison. RESULTS: The removable partial denture in 5 years after wearing, the dental caries rate of the abutment teeth (17.38%) was significantly higher than the non abutment teeth (7.10%) (P<0.01). The missing abutment teeth (27.01%) extracted because of fracture or loose that made by periodontal disease and dental caries which can not be reserved was significantly higher than that of non abutment teeth (7.79%). CONCLUSION: The effect on abutment teeth of removable partial denture in aged patients were complex and it can increase the rate of dental caries , fracture and missing of abutment teeth.

Aged↗